body {
    font-family: "Helvetica Neue", sans-serif;
    background-color: #f7f9fc;
    margin: 0;
    padding: 0;
}

h1 {
    text-align: center;
    padding: 30px 0;
    color: #2c3e50;
}

form {
    max-height: 100%;
    max-width: 100%;
    margin: auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.question {
    margin-bottom: 20px;
    padding: 15px;
    border-left: 4px solid #3498db;
    background-color: #f0f8ff;
    border-radius: 6px;
}

.question label {
    font-weight: bold;
    color: #34495e;
    display: block;
    margin-bottom: 8px;
}

.options {
    margin-left: 20px;
}

.options input {
    margin-right: 5px;
}

button[type="submit"] {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 20px;
}

button[type="submit"]:hover {
    background-color: #2980b9;
}

.error {
    color: red;
    text-align: center;
    font-weight: bold;
    margin-top: 10px;
}